Solar system stamp9/3/2023 A Special Cover brought out by 56 APO on ġ1) 29 Air Defence Regiment (SAMBA): 60 years of Glorious Service : A Special Cover issued by 99 APO on ġ2) 102 (VC) Engineer Regiment: Celebrating the Golden Jubilee of its raising in 1965: A Special Cover issued by 99 APO on ġ3) 130 Air Defence Regiment: Golden Jubilee Celebrations: A Special Cover issued by 56 APO commemorating the occasion on ġ4) 3rd Battalion The Sikh Regiment: Centennial of the Battle of Hai fought on during WW I : A Special Cover issued by 56 APO on ġ5) 27 Air Defence Missile Regiment (Amritsar Airfield): Platinum Jubilee Celebrations (75 Years) A Special Cover brought out by 56 APO on ġ6) 237 Engineer Regiment : Golden Jubilee Celebrations ( 50 Years of Glorious Service). The inner planets have very few moons.Ĭommemorative Stamps issued by India Post:ġ0) 1 Air Formation Signal Regiment Platinum Jubilee Celebrations - 2016. The first four planets - Mercury, Venus, Earth and Mars are much nearer to the sun than the other four planets. Around this time (1704), the term "Solar system" was first coined in English. This was the first evidence recorded by a European scientist that objects other than the planets also orbited the Sun. Giovanni Domenico Cassini later identified four more moons of Saturn and the Cassini division in Saturn's rings.Įdmund Halley realised in 1705 that repeated sightings of a comet were recording the same object, returning regularly once every 75-76 years. He found out that the Moon was cratered, that the Sun was marked with sunspots and that Jupiter had four satellites in orbit around it.Ĭhristian Huygens followed on from Galileo's discoveries by finding out Saturn's moon Titan and the shape of the rings of Saturn. Galileo Galilei was the first to discover physical details about the individual bodies of the Solar System. In the 17th Century, Galileo Galilei, Johannes Kepler and Isaac Newton, developed a modern understanding of Physics that led to the gradual acceptance of the idea that Earth moves around the Sun and that the planets are governed by the same physical laws that govern Earth.
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